Description

Mazda 110 Parts Catalog – Factory Part Numbers for the Rotary Wankel

If you are pulling a Mazda 110 rotary apart and need to know which rotor housing gasket or idle gear matches the build date, guesswork costs you time and money. I have seen more than one shop order the wrong water pump because they trusted a third-party listing. This Mazda 110 Parts Catalog stops that nonsense. It is 173 pages of factory exploded diagrams and OEM part numbers direct from Mazda’s 1970s engineering files. No aftermarket re-draws, no aggregate listings—just the original index that Mazda dealers used to bin parts.

Engine Section: Rotor Housing and Idle Gear

The catalog opens with the rotary engine assembly. Group 10 covers the rotor housing and idle gear with figure references that map directly to the exploded view on page 10 (look for the image numbers 2–6 for the housing, 8–9 for the gear). Group 11 gives separate pages for the front and rear rotors—part numbers differ between the two positions, so do not assume they are interchangeable. The catalog shows each seal and corner piece. If you are rebuilding a 12A or 13B from the 110 series, these exploded views save you from calling the parts counter three times.

Cooling System: Factory Diagram on Page 33

Page 33 is where the cooling system diagram lives: water pump, fan drive body, thermostat housing, and all the hoses that Mazda spec’d. The catalog lists each component by group 15. You get the water pump part number (from the table on page 37–39) and the fan drive body (page 40–41). Notice the fan drive body has its own sub-number—don’t order a generic replacement because the offset and bolt pattern vary by production month. Stick with the factory number from this catalog.

3 Critical Groups for Chassis and Brake Orders

Do not skip the chassis section. Group 26 (rear brake) on page 85 gives the brake cylinder, shoes, and spring kit numbers. Group 32 (steering gear and housing) on page 99 covers the steering box parts. The rear suspension (group 28, page 93) includes the leaf spring brackets and bushings. Every bolt, bushing, and bracket has a Mazda part number. If you are piecing together a 110 for rally or restoration, these pages are gold. Mazda Miata 2004 Parts Catalog – Factory OEM Parts Breakdown covers a different platform but the same level of factory detail.

Why an OEM Parts Catalog Beats Aftermarket Lists

Aftermarket parts catalogs often merge production runs or substitute superseded numbers without telling you. This document is a scan of the original Mazda publication, so every number printed is the number that came from the factory. Look at the precaution page: “In case the part number and name of the part do not coincide with each other, the part will be sent to you in accordance with the part number.” That tells you the part number is king here. Trust the number, not the description if they conflict. For a broader view of how automotive data reliability affects repairs, check Automotive Industry Overview.

Body and Electrical: What the Index Covers

Body parts start at group 50 with bumpers, bonnet, trunk lid, and body panels. Group 55 has meters (instruments), group 57 seats, group 58–59 side door assemblies with glass and locks. Group 66 covers all lighting—headlamps, front turn signals, rear combination lamps, reverse/license lamps, and side markers. Electrical equipment for the body includes the windshield wiper, screen washer, and auto radio. Mazda 323 Parts Catalog – Factory OEM Rally Parts Manual gives similar breakdowns for a four-cylinder platform, but the rotary-specific groups here are unique.

The battery and carrier show up in group 18.70—yes, the battery is listed with the engine electrical section. That matters because the 110 used a specific battery tray and hold-down. Page 70 (group 18.70) has the part numbers. Automotive Battery discusses modern battery types, but when you are restoring a 1970s rotary, the factory part number is your only guarantee the tray fits.

FAQ

Does this catalog include torque specs or repair procedures?

No. This is a parts catalog—exploded diagrams and OEM part numbers only. Torque values and assembly steps belong in the service manual. Order this if you need to identify and source genuine Mazda parts for a 110.

How are the part numbers organized?

By group number (e.g., 10 for rotor housing, 15 for cooling system) and figure number. Each figure corresponds to an exploded diagram. You look up the part visually, then read the part number from the adjacent table. The index at the front lists every group and page number.

Can I use this catalog for a Mazda 110S?

Yes. The cover says “MAZDA 110 S PARTS CATALOG.” It covers the 110S model specifically. If your car is a base 110, verify the engine and chassis numbers against the group listings, but the majority of rotary-related groups apply.

What about the body panel numbers for a 1972 model?

The catalog does not break down by model year, but it lists the Mazda part numbers that were current at the time of printing. Cross-reference with your chassis plate; if the number shown matches late-production 110S, it will fit your 1972. For early 110S differences, check the group 53.54 body panels section carefully.

Final Word – Get the Right Part the First Time

Restoring or repairing a Mazda 110 rotary without the factory parts catalog is like rebuilding a carburetor blindfolded—you might get lucky, but you will probably order the wrong jet. This 173-page PDF gives you the exact exploded view and Mazda part number for every nut, bolt, gasket, seal, and electrical component. No more cross-referencing generic websites. Access the Factory Manual and keep it on your tablet or print the pages you need. Your parts counter will thank you.

Related Manuals

• Mazda Miata 2004 Parts Catalog – Factory OEM Parts Breakdown
• Mazda 323 Parts Catalog – Factory OEM Rally Parts Manual
• Mazda RX-8 2003 Parts Catalog – OEM Factory Specs